- use portability wrapper define bb_setpgrp.
diff --git a/shell/msh.c b/shell/msh.c
index 39aecdf..d8353e0 100644
--- a/shell/msh.c
+++ b/shell/msh.c
@@ -3031,7 +3031,7 @@
 	} else {
 		/* put non-interactive processes into a different process group.
 		 * we don't support jobs, but this is at least sane: see Bug 659 */
-		setpgrp();
+		bb_setpgrp;
 	}
 
 	if (t->type == TPAREN)